<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avater_box">
        <img src="../../assets/img/loginLogo.jpg" alt="" />
      </div>
      <!-- 表单区域 -->
      <el-form
        ref="loginFormRef"
        label-width="0px"
        class="login_form"
        :model="loginForm"
        :rules="loginFormRules"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            prefix-icon="el-icon-user"
            v-model="loginForm.username"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            type="password"
            prefix-icon="el-icon-lock"
            v-model="loginForm.password"
          ></el-input>
        </el-form-item>
        <!-- 登录/重置按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登陆</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: 'Login',
  data() {
    return {
      //登陆表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456',
      },
      //表单验证规则
      loginFormRules: {
        username: [
          { required: true, message: '请输入账号', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur',
          },
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '长度在 6 到 15 个字符',
            trigger: 'blur',
          },
        ],
      },
    }
  },
  methods: {
    //清空表单
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },
    //登录验证
    login() {
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登陆失败')
        this.$message.success('登陆成功')
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    },
  },
}
</script>

<style lang='less' scoped>
.login_container {
  background-image: url('../../assets/img/backgroundImg.jpg');
  background-size: 100% 100%;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  // background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avater_box {
    overflow: hidden;
    display: flex;
    height: 150px;
    width: 150px;
    border: 6px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    background-color: #eee;
    box-shadow: 0 0 10px rgb(114, 113, 113);
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    justify-content: space-evenly;
    align-items: center;
    img {
      height: 90%;
      width: 90%;
      border-radius: 50%;
    }
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 25px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>